Stein Erik Tafjord (born 2 November 1953 in Langevåg, Norway) is a Norwegian jazz musician (tuba), and brother of the French horn player Runar Tafjord.

He was also one of the founders Ytre Suløens Jass Ensemble in 1973, where he played for 17 years.

After many years as participant of the Kringkastingsorkesteret, he started as a freelance jazz and studio musician.

Tafjord has developed a very unconventional style of playing as improviser, which has had an influence on composers and others musicians, to be more aware of the tuba as instrument.

He has worked with the singer and actress Elisabeth Lindland in several different contexts.